Finding the Fourth Proportional to 2,990.16, 4,463.38 and 2,773.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990.16 : 4,463.38 = 2,773.34 : x
2. Step 2: Convert to fraction form
   2,990.16/4,463.38 = 2,773.34/x
3. Step 3: Cross multiply
   2,990.16x = 4,463.38 × 2,773.34
4. Step 4: Simplify right side
   2,990.16x = 12,378,470.29
5. Step 5: Solve for x
   x = 12,378,470.29/2,990.16
6. Step 6: Final answer
   x = 4,139.74